greasing trimmer blades

My hedge trimmer says lubricate the blades with gear grease. What is gear grease? would wd40 do?

MakersMark

.don't use WD40...its a penetrant, and not a true lubricant.

I use white lithium spray...its on sale on Lidl now

The Continental Op

I think what the instructions probably mean is keep the gear box topped up with grease.

https://www.youtube.com/watch?v=ZTWlLI7l_0s

But an example of a youtuber getting it wrong!

Just get a tube of grease and take the nut highlighted off. The tube will screw in where the nut was and you can squeeze some grease in. A tube of grease will last you for ages only needs about 10g occasionally.

https://www.amazon.co.uk/Stihl-0781-120-1109-Lubricant/dp/B007TK174M/

And yeah WD40 is OK for the blade part but I use Lithium grease overwinter to protect them and wipe it off when I use them.

https://www.boards.ie/discussion/comment/118908199#Comment_118908199

Not the gearbox it's the cutting blade I'm asking about

The Continental Op

As an example I don't see any grease here? I'm sure I can find plenty of other instructions that don't mention grease on the cutters.

https://www.youtube.com/watch?v=IW-b3BZeJrc

WD 40 is not as good but an alternative to the resin remover.

The only time I put grease on the cutters (other than winter storage because my shed gets very damp) is when I completely dismantle the cutter bars and then I put a smear along the central bar and under the long top washer plate. A location you can't even get at normally.

I really don't see a point to greasing the cutter bar between the cutters because the grease will come off very quickly and if you use to much of it it will end up on the cut branches.

https://www.boards.ie/discussion/comment/118910602#Comment_118910602

Doesn't matter what you can find

The manual says

"Apply a small amount of suitable lubricant, like gear grease, on

the cutting device (1) to retain a good cutting performance"

In the manual (1) points to the blades

Discodog

I have a lot of experience with Stihl - including rebuilding gearboxes. Never rely on the grease nut/tube method. I remove the backplate & apply the grease manually by packing the gearbox. The main bearings are prone to failing.

WD 40 can dissolve the grease so don't use it or if you do then let is run off & dry without it getting into the gearbox. I use chain oil on the blades.